
Designed for 400G Ethernet data center and cloud network environments, the Arista Compatible 400G QSFP-DD QDD DR4 Optical Transceiver provides 425Gbps (4x106.25Gb/s) throughput in a QSFP-DD form factor. It operates at 1310nm over SMF through a MPO-12/APC connector and supports link lengths up to 500m. The module meets QSFP-DD MSA HW Rev 5.1, QSFP-DD CMIS Rev 5.0, IEEE 802.3bs and includes digital diagnostic monitoring for live status readout.
Product Highlights
- QSFP-DD form factor, 425Gbps (4x106.25Gb/s) data rate
- Wavelength: 1310nm
- Connector: MPO-12/APC
- Reach: up to 500m
- Fiber media: SMF
- DDM/DOM: Supported
Specifications
| Arista Compatible | QDD-400G-DR4 |
|---|---|
| Manufacturer | HT |
| Form Factor | QSFP-DD |
| Max. Data Rate | 425Gbps (4x106.25Gb/s) |
| Wavelength | 1310nm |
| Max. Cable Distance | 500m |
| Connector | MPO-12/APC |
| Media | SMF |
| Modulation Format | PAM4 |
| Receiver Type | PIN |
| TX Power | -2.9~4.0dBm |
| Minimum Receiver Power | -5.9dBm |
| Power Budget | 3dB |
| Receiver Overload | 4.0dBm |
| Max. Power Consumption | 9W |
| Extinction Ratio | 3.5dB |
| DDM/DOM | Supported |
| Commercial Temperature Range | 0 to 70°C (32 to 158°F) |
| Modulation (Electrical) | 8x50G-PAM4 |
| Modulation (Optical) | 4x100G-PAM4 |
| BER | 1E-12 |
| Inbuilt FEC | No |
| MTBF | 4928939 Hours (@40°C, 60%CL) 2544866 Hours (@40°C, 90%CL) 3968949 Hours (@50°C, 60%CL) 1976795 Hours (@50°C, 90%CL) |
| Application | 400G Ethernet |
| Protocols | QSFP-DD MSA HW Rev 5.1, QSFP-DD CMIS Rev 5.0, IEEE 802.3bs |
Applications
Network architects choose the Arista Compatible 400G QSFP-DD QDD DR4 Optical Transceiver for 400G Ethernet data center and cloud network environments: it runs 425Gbps (4x106.25Gb/s) over SMF and reaches 500m. Digital diagnostics report transmit power, receive power and temperature in real time, which simplifies commissioning and ongoing maintenance. For networks standardized on Arista hardware, it is a drop-in equivalent of the QDD-400G-DR4.
Standards and Compatibility
This product is designed and tested to comply with QSFP-DD MSA HW Rev 5.1, QSFP-DD CMIS Rev 5.0, IEEE 802.3bs. It is interoperable with Arista equipment and serves as a direct equivalent to the Arista part number QDD-400G-DR4.
Ordering Information
Our part number for this module is QDD-DR4-400G. When ordering, just let us know the quantity and whether you need the compatibility coding for a particular switch brand; labeling and packaging can also follow your channel requirements.
Quality Assurance
Before any product leaves our factory it goes through optical performance testing, compatibility verification on real switch platforms and a final visual inspection. Our in-house test lab holds a wide range of current and legacy switches from major brands, so interoperability is proven on the actual equipment your network uses rather than assumed from paper specifications.
How We Pack
Transceivers and cables are individually protected against static and dust, then consolidated into sturdy cartons suitable for international courier shipment. For larger orders we shrink-wrap and strap cartons onto pallets. Tell us your warehouse or retail requirements and we will pack accordingly.
Customization Service
Because we are the factory, customization is straightforward: non-standard lengths, different jacket materials, specific polarity or breakout wiring, and compatibility programming for particular switch brands are all routine work for us. Small trial orders are accepted so you can verify quality before scaling up.
Shipping and Lead Time
Standard products are held in stock and usually ship within one to three working days. We dispatch worldwide by DHL, UPS, FedEx, TNT or EMS, and for bulk orders we arrange air or sea freight. Shipments can also be sent collect on your own courier account or delivered to your freight forwarder.



